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AVEVA™ Communication Drivers

Structure diagnostics

  • Last UpdatedJul 10, 2024
  • 3 minute read

The Communication Driver namespace may include many levels of hierarchy, some of which have not been added and are not visible in the console tree. In the Structure diagnostic node, you can view data for as many levels of hierarchy as possible based on the structure of the Communication Driver.

Data for each structural hierarchy includes:

  • Data quality icon

  • Name of the item

  • Number of items

  • Number of items with errors

  • Read/Write status

  • Value

  • Time

  • Quality

  • Number of messages

  • Device groups

The R/W Status column always shows R/W, which indicates that the structure supports both read/refresh/property transactions and write transactions. For more information, see R/W items in diagnostics.

The structure icons are marked as active or inactive. The hierarchical elements (structural branches) are always marked as active, and the normal/warning/error color of the icons is set as follows:

Icon State

Icon Color

Hierarchical Element

Normal

The status error code is greater than or equal to zero (not negative), and the OPC quality is good for all items on this level.

Warning

The status error code is greater than or equal to zero (not negative), and the OPC quality is uncertain or bad for at least one item on this level.

Error

The status error code is less than zero (negative).

Hierarchical items (leaves) are marked as active if they are referencing at least one active group item. They are marked as inactive if they are referencing all inactive group items. The normal/warning/error color of the icons is set as follows:

Icon State

Icon Color

Item

Normal

The OPC quality is good.

Warning

The OPC quality is uncertain.

Error

The OPC quality is bad.

If the Structure node shows an error indicator, it does not necessarily mean that an error condition exists at the hierarchical level in focus. It means that an error condition exists at some point down the hierarchical tree.

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